sanjay gupta with us now. so that last answer kind of supersedes my question, which is did we learn anything? >> well, that was the answer he gave to every single question. there was a lot of people involved with these hearings today including the gentleman there at the head of the necc, but also the fda in terms of what their role was in all of this, what regulations and regulatory oversight should have been there. i'll tell you one thing you may have already known this, the company itself knew about this contamination dating back to january. >> and continued to dispense? >> even while some of these were being dispensed. that's obviously a big concern. and there was a massive contamination that obviously took place there. i visited this particular facility, spent some time outside there. you're looking at images actually from outside the particular -- >> i remember that. it's powerful. >> it's hard to say exactly how this contamination occurred. we heard about air conditioners turned off at night despite need